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R Deep Learning Cookbook

You're reading from   R Deep Learning Cookbook Solve complex neural net problems with TensorFlow, H2O and MXNet

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Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781787121089
Length 288 pages
Edition 1st Edition
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Authors (2):
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Achyutuni Sri Krishna Rao Achyutuni Sri Krishna Rao
Author Profile Icon Achyutuni Sri Krishna Rao
Achyutuni Sri Krishna Rao
PKS Prakash PKS Prakash
Author Profile Icon PKS Prakash
PKS Prakash
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Toc

Table of Contents (11) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Deep Learning with R 3. Convolution Neural Network 4. Data Representation Using Autoencoders 5. Generative Models in Deep Learning 6. Recurrent Neural Networks 7. Reinforcement Learning 8. Application of Deep Learning in Text Mining 9. Application of Deep Learning to Signal processing 10. Transfer Learning

Evaluating the output from an RBM


Here, let's plot the weights of the final layer with respect to the output (reconstruction input data). In the current scenario, 900 is the number of nodes in the hidden layer and 784 is the number of nodes in the output (reconstructed) layer.

In the following image, the first 400 nodes in the hidden layer are seen:

Here, each tile represents a vector of connections formed between a hidden node and all the visible layer nodes. In each tile, the black region represents negative weights (weight < 0), the white region represents positive weights (weight > 1), and the grey region represents no connection (weight = 0). The higher the positive value, the greater the chance of activation in hidden nodes, and vice versa. These activations help determine which part of the input image is being determined by a given hidden node.

Getting ready

This section provides the requirements for running the evaluation recipe:

  • mnist data is loaded in the environment
  • The RBM model...
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